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Vetsch T, Eggmann S, Jardot F, von Gernler M, Engel D, Beilstein CM, Wuethrich PY, Eser P, Wilhelm M. Ventilatory efficiency as a prognostic factor for postoperative complications in patients undergoing elective major surgery: a systematic review. Br J Anaesth 2024:S0007-0912(24)00144-2. [PMID: 38644158 DOI: 10.1016/j.bja.2024.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/08/2024] [Accepted: 03/16/2024] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND Major surgery is associated with high complication rates. Several risk scores exist to assess individual patient risk before surgery but have limited precision. Novel prognostic factors can be included as additional building blocks in existing prediction models. A candidate prognostic factor, measured by cardiopulmonary exercise testing, is ventilatory efficiency (VE/VCO2). The aim of this systematic review was to summarise evidence regarding VE/VCO2 as a prognostic factor for postoperative complications in patients undergoing major surgery. METHODS A medical library specialist developed the search strategy. No database-provided limits, considering study types, languages, publication years, or any other formal criteria were applied to any of the sources. Two reviewers assessed eligibility of each record and rated risk of bias in included studies. RESULTS From 10,082 screened records, 65 studies were identified as eligible. We extracted adjusted associations from 32 studies and unadjusted from 33 studies. Risk of bias was a concern in the domains 'study confounding' and 'statistical analysis'. VE/VCO2 was reported as a prognostic factor for short-term complications after thoracic and abdominal surgery. VE/VCO2 was also reported as a prognostic factor for mid- to long-term mortality. Data-driven covariable selection was applied in 31 studies. Eighteen studies excluded VE/VCO2 from the final multivariable regression owing to data-driven model-building approaches. CONCLUSIONS This systematic review identifies VE/VCO2 as a predictor for short-term complications after thoracic and abdominal surgery. However, the available data do not allow conclusions about clinical decision-making. Future studies should select covariables for adjustment a priori based on external knowledge. SYSTEMATIC REVIEW PROTOCOL PROSPERO (CRD42022369944).
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Affiliation(s)
- Thomas Vetsch
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Graduate School for Health Sciences, University of Bern, Bern, Switzerland.
| | - Sabrina Eggmann
- Department of Physiotherapy, Inselspital, Bern University Hospital, Bern, Switzerland
| | - François Jardot
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Marc von Gernler
- Medical Library, University Library of Bern, University of Bern, Bern, Switzerland
| | - Dominique Engel
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Christian M Beilstein
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Patrick Y Wuethrich
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Prisca Eser
- Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Matthias Wilhelm
- Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Franssen RFW, Berkel AEM, Ten Cate DWG, van der Palen J, van Meeteren NLU, Vogelaar FJ, Slooter G, Klaase JM, Janssen-Heijnen MLG, Bongers BC. A retrospective analysis of the association of effort-independent cardiopulmonary exercise test variables with postoperative complications in patients who underwent elective colorectal surgery. Langenbecks Arch Surg 2023; 409:7. [PMID: 38093118 DOI: 10.1007/s00423-023-03197-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023]
Abstract
PURPOSE This study aimed to investigate the association of effort-independent variables derived from the preoperative cardiopulmonary exercise test (CPET) with 30-day postoperative complications after elective colorectal surgery. METHODS A multicenter (n=4) retrospective explorative study was performed using data of patients who completed a preoperative CPET and underwent elective colorectal surgery. The preoperative slope of the relation between minute ventilation and carbon dioxide production (VE/VCO2-slope) and the oxygen uptake efficiency slope (OUES), as well as 30-day postoperative complications, were assessed. Multivariable logistic regression analyses and receiver operating characteristic (ROC) curves were used to investigate the prognostic value of the relationship between these preoperative CPET-derived effort-independent variables and postoperative complications. RESULTS Data from 102 patients (60.1% males) with a median age of 72.0 (interquartile range 67.8-77.4) years were analyzed. Forty-four patients (43.1%) had one or more postoperative complications (of which 52.3% general and 77.3% surgical complications). Merely 10 (9.8%) patients had a general complication only. In multivariate analysis adjusted for surgical approach (open versus minimally invasive surgery), the VE/VCO2-slope (odds ratio (OR) 1.08, confidence interval (CI) 1.02-1.16) and OUES (OR 0.94, CI 0.89-1.00) were statistically significant associated with the occurrence of 30-day postoperative complications. CONCLUSION The effort-independent VE/VCO2-slope and OUES might be used to assist in future preoperative risk assessment and could especially be of added value in patients who are unable or unwilling to deliver a maximal cardiorespiratory effort. Future research should reveal the predictive value of these variables individually and/or in combination with other prognostic (CPET-derived) variables for postoperative complications. TRIAL REGISTRATION NUMBER ClinicalTrials.gov NCT05331196.
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Affiliation(s)
- Ruud F W Franssen
- Department of Clinical Physical Therapy, VieCuri Medical Center, Tegelseweg 210, 5912, BL, Venlo, The Netherlands.
- Department of Epidemiology, GROW School for Oncology and Reproduction, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
| | - Annefleur E M Berkel
- Department of Surgery, Medisch Spectrum Twente, Enschede, The Netherlands
- General Practice, Rijk-Berkel, Hengelo, The Netherlands
| | - David W G Ten Cate
- Department of Surgery, Máxima Medical Center, Veldhoven, The Netherlands
| | - Job van der Palen
- Department of Epidemiology, Medisch Spectum Twente, Enschede, The Netherlands
- Section Cognition, Data and Education, Faculty of Behavioural, Management and Social Sciences, University of Twente, Enschede, The Netherlands
| | - Nico L U van Meeteren
- Department of Anesthesiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Top Sector Life Sciences & Health, The Hague, The Netherlands
| | - F Jeroen Vogelaar
- Department of Epidemiology, GROW School for Oncology and Reproduction, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Gerrit Slooter
- Department of Surgery, Máxima Medical Center, Veldhoven, The Netherlands
| | - Joost M Klaase
- Department of Hepatopancreatobiliary Surgery and Liver Transplantation, University Medical Center Groningen, Groningen, The Netherlands
| | - Maryska L G Janssen-Heijnen
- Department of Epidemiology, GROW School for Oncology and Reproduction, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Epidemiology, VieCuri Medical Center, Venlo, The Netherlands
| | - Bart C Bongers
- Department of Nutrition and Movement Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Surgery, School of Nutrition and Translational Research in Metabolism (NUTRIM), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
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Beilstein CM, Krutkyte G, Vetsch T, Eser P, Wilhelm M, Stanga Z, Bally L, Verra M, Huber M, Wuethrich PY, Engel D. Multimodal prehabilitation for major surgery in elderly patients to lower complications: protocol of a randomised, prospective, multicentre, multidisciplinary trial (PREHABIL Trial). BMJ Open 2023; 13:e070253. [PMID: 36596634 PMCID: PMC9815025 DOI: 10.1136/bmjopen-2022-070253] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION The global volume of surgery is growing and the population ageing, and economic pressure is rising. Major surgery is associated with relevant morbidity and mortality. Postoperative reduction in physiological and functional capacity is especially marked in the elderly, multimorbid patient with low fitness level, sarcopenia and malnutrition. Interventions aiming to optimise the patient prior to surgery (prehabilitation) may reduce postoperative complications and consequently reduce health costs. METHODS AND ANALYSIS This is a multicentre, multidisciplinary, prospective, 2-arm parallel-group, randomised, controlled trial with blinded outcome assessment. Primary outcome is the Comprehensive Complications Index at 30 days. Within 3 years, we aim to include 2×233 patients with a proven fitness deficit undergoing major surgery to be randomised using a computer-generated random numbers and a minimisation technique. The study intervention consists of a structured, multimodal, multidisciplinary prehabilitation programme over 2-4 weeks addressing deficits in physical fitness and nutrition, diabetes control, correction of anaemia and smoking cessation versus standard of care. ETHICS AND DISSEMINATION The PREHABIL trial has been approved by the responsible ethics committee (Kantonale Ethikkomission Bern, project ID 2020-01690). All participants provide written informed consent prior to participation. Participant recruitment began in February 2022 (10 and 8 patients analysed at time of submission), with anticipated completion in 2025. Publication of the results in peer-reviewed scientific journals are expected in late 2025. TRIAL REGISTRATION NUMBER NCT04461301.
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Affiliation(s)
- Christian M Beilstein
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Gabija Krutkyte
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
- Division of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital University Hospital Bern, University of Bern, Bern, Switzerland
| | - Thomas Vetsch
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
- Medical Division Rehabilitation & Sports Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Prisca Eser
- Medical Division Rehabilitation & Sports Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Matthias Wilhelm
- Medical Division Rehabilitation & Sports Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Zeno Stanga
- Division of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital University Hospital Bern, University of Bern, Bern, Switzerland
| | - Lia Bally
- Department of Diabetes, Endocrinology, Clinical Nutrition and Metabolism, Inselspital University Hospital, Bern, Switzerland
| | - Martin Verra
- Institute of Physiotherapy, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Markus Huber
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Patrick Y Wuethrich
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Dominique Engel
- Department of Anaesthesiology and Pain Medicine, Inselspital University Hospital, University of Bern, Bern, Switzerland
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